Munchkin Gas-Fired Hot Water Boiler Installation Manual download pdf (Page 14)

GAS-FIRED HEATER Installation Manual

PART 5: MUNCHKIN CONTENDER PIPING

(CONTINUED)

concentration and inhibitor level. The system

should be tested at least once a year and as

recommend by the producer of the glycol

solution. Allowance should be made for the

expansion of the glycol solution in the system

piping. Example 50% by volume solution

expands 4.8% in volume for the temperature

increase from 32 F to 180 F, while water expands

3% with the same temperature rise.

Basic steps are listed below, with Illustration,

which will guide you through the installation of

the Munchkin.

1. Connect the system return marked “Heater In”.

2. Connect the system supply marked “Heater Out”.

3. Install Purge and Balance Valve or shut off

valve and drain on system return to purge air

out of each zone.

4. Install a Back Flow preventor on the Cold Feed

Make-Up Water line.

5. Install a Pressure Reducing Valve on the Cold

Feed Make-Up Water line, (15 PSI nominal on

the system return). Check Temperature and

Pressure Gauge which should read minimum

pressure of 12 PSI.

6. Install a circulator as shown in piping details

(this section). Make sure the circulator is

properly sized for the system and friction loss.

7. Install an Expansion Tank on the system

supply. Consult the tank manufacturer’s

instruction for specific information relating to

expansion tank installation. Size the expansion

tank for the required system volume and

capacity.

8. Install an Air Elimination Device on the system

supply.

9. Install a drain valve at the lowest point of the

system. Note: The Munchkin Contender can

not be drained completely of water without

purging the unit with an air pressure 15 PSI.

10. The Safety Relief Valve is installed at the

factory. Pipe the discharge of the safety relief

valve to prevent injury in the event of pressure

relief. Pipe the discharge 6” above the drain to

a drain. Provide piping that is the same size as

the safety relief valve outlet. Never block the

outlet of safety relief valve.

H. CIRCULATOR SIZING

The Munchkin Contender Heat Exchanger does

have pressure drop which must be considered

in your system design. Refer to the graph in Fig.

5-1 below for pressure drop through the

Munchkin Contender Heat Exchanger for rec-

ommended pump selection at a 20∆t design.

CAUTION

The Munchkin Contender should not be

operated as a potable Hot Water Heater.

Figure 5-1

* NOTE: The recommended circulators are based on 1 gpm per 10,000 btu/hr with 20°∆t.

1 2 ... 9 10 11 12 13 14 15 16 17 18 19 ... 67 68

Comments to this Manuals

No comments

Munchkin Gas-Fired Hot Water Boiler Installation Manual Page 14

Comments to this Manuals

Related products and manuals for Water heaters & boilers Munchkin Gas-Fired Hot Water Boiler